Alfapat

Hmm , need more info on that one, if you had a pumped shower off the hot pipe surely the return would have to shut off as it would continually lose flow and pressure.

Your correct about the long lead time , I get the reminder every night! I say to my partner just run the cold off first and dont rely on the hot water staying that hot with the lead time already in. However the pipes are insulated with some of it the old fashioned brown jute stuff, and this is Scotland . Iam trying to up the temp with the cotroller with a higher flow , but seeing the code to set , other than that , three dots using the immersion may up the storage temp a bit more/

So standing under a 50c temperature with a mixer shower from Air source heated tank is hot enough, is it, can you tell me? Do you know the water pressure? I may as I said further down this thread that if I can automate the booster heater to come in, this may compensate for temperature loss down to the end of the bungalow.

As I never finished this thread properly , I thought I would say much of the problems I had are gone . The plumber /electrician I eventually found knew what he was doing and found all the wiring wrongly set up. Basically the system was not independently running between the two sys ie. DHW AND HEATING . So all last year through the summer , heating side was using cold and vice versa! Bills are a lot less , thankfully.

I have installed a Samsung Outdoor Heat pump 16kw. After 7 years , I have finally resolved and error which was down to the electrical wiring and central belt Scotland cowboys who went bust after one year , not helpful! However , my bungalow is quite long and with the temperature of DHW in this system reaching normally 48degrees , the bath water has to run for some time like 2mns at least to be useful. I am about to replace the electric shower to an up to date power one and with the system as it is , I am wandering if a Joules unvented tank for hot water and mains cold will be ok for a power shower with mixer . Is 48c hot enough and balance with cold mains. Mains is not high pressure , but the tank is probably fed with the same supply. There is a thought that if I send the control unit(version 5 to the setting with three dots instead of eco two then there would be enough water , better than running a bath every night at least.

So far , I have found out part of my fault is an intermittent HW motorized valve is faulty. Which would explain scavenging of the system . Also not certain , but the valves (HW and Heating ) may wired wrongly . Electrician checking Friday.

Nope , this is not working , DHW SET TO REACH 50C but cuts out at 48c , will check my new parameters set. DHW no better at other end of Bungalow despite lagging . Heating till 3am when I happened to be up , 20c House temp .,which was fine . Circulation /flow 39c set for 52c -1c outside. 6.30 am No heating and error E911 showing and defrost on for pump. Cancel by pressing On button gen5 Sun icon. Got home and DHW sitting at 48c and circ 53c so kind of working , but why not all the time . Recko there could be scavenging but not all the time , probably switch valves . As for error code , which is flow fault , I can only put this down to frost , but it should overcome this. Just saying perhaps it might help someone with the same scenario , will post when I get a result.

Yes spot on. Only I have what Freedom Pumps suggest on Video which is 48c , I will up this tonight to 50c and put flow up to 52 , now that the DHW icon disappears because it reaches desired temp due to the proper placement of probe. Sorry if I don't come across correctly but I do understand now thanks.

Going back to the title "Living with" I thought all would be fine with the hot water on track at 48c , but complaints from her indoors says there was barely enough , colder night I suppose and a long cold length for it to travel , so I am upping the temp by 2 degrees and since the DHW tank temp icon disappears from the controller now , the expected power usage should drop. Just to ruin all this the heating failed to come on when I happened to be up this morning , what in heavens name is going on , no error codes -0.5 c outside , 17.5 on thermostat asking for heat which is set for 20c All back to normal just now 10.am. Worse than having a Land Rover or is it 🤨!! ?

If you look back there is a picture of my system , water to right, valves between tanks. Not sure which valve is which till I study it again. Page one of thread.

Yes I know what kw/h stands for , I am noy seeing your point of posting , sorry.

WHAT!

They are very close , strange that I have a holding tank for heating, but that surely is a good thing. I'm not sure were the coli is placed in the dhw , I m sure I can work that out , doesn't matter just now. I have a hot water expansion and dhw expansion tank

Yes , I am really hoping that this shows that the pump or set temp is happy now and Im looking for for less consumption. It would make sense but time will tell. Even in the summer that tank icon and pump cycling is always on and the only way of deleting it is to turn off the system , as I saw it . It saved 10-15kw/h through 8 hours

I never saw the hot tank icon disappear in the the last 5 years of operation , I think I have had a small beakthrough. I measured the water this morning and as I said earlier and found out that the cake probe i used under the hot tap was showing 47.c. So following that I went to the loft with some warm water and pulled the probe out of the tank and dipped it in with the cake probe into the water and both showed the same results. I rest the probe into the tank and found it short of length and so unclipped the lead from the loom to gain a bit more, so I reckon a further 6 inches was found and put it back in. Incidentally the cake probe was showing 47.5.c at 4.5 inches. Secured the wire and went back down , looked at the hot tank temp on the controller and alas showing 48.c . What happened next, the tank symbol disappeared ! First time ever! So now Ill see if the kw/h will reduce. I can only presume that the machine has constantly tried to reach the temperature set , I don't know . Watch this space !

No not noticed this , but I a have always in mind to check why the rads are cold when they should be maintaining the cycle.

I get the first part and I can see the options available and I have seen the video from Graham Hendra.

Pretty much but no Heating storage tank.

Yes I get that, its 16kw , but no matter its still a lot. Ok I have had a small but significant break through.

New Text Document.txt This the nearest I can get . The schematics dont show my exact system , but basically an unvented Hot water tank shown in pics shown previously and heating storage tank waiting for requirements if neede for heating circ.

No , never any handover Manual by either. I have downloaded that and following the field settings I cant see for the life of me Why its so wrong .There are schematics so let me ind one that suits my set up.

First of all the hot water is set for the tank at 48.c , the flow temperature is sat at 50.c at present , so the hot water tank should reach that 48.c. On this system I have at present set the flow temp at 50.c , so that flow switches to heating once the water reaches 48.c

There are only two temps surely , I don't have a separate heating tank temp. ,on the controller, its whatever the flow temp. that sets the tank temp for heating, which should always be up there. eg 50.c

Ok , so heating runs at one temperature , that is showing on the control as 20/21 degrees which is what the room thermostat is asking and eventually receives . right ? The cylinder or circ temp in the heating tank is 36.2. The heating flow temp is the same as the heating tank temperature . I wonder if you are talking about Hot water tank temperature. That is set to 48 degrees and if hot water is required and falls below by 5 degrees then the flow temp kicks in which should be up to 50 degrees which its set to , heats the water back up.

Yes , it does look like that , not only the settings not getting there and so much power required , sometimes reluctant to cut in when you look at thermostat down to .5 below set house temp and sometimes not kicking in at all, this can be over ridden of course by bumping up the setting and dropping again. That I know is a different problem but is overcome. Yes I might give Sugplumb a ring , and ask a few questions. This morning with no use of Hot water the figures are Circ 52.8 and DHW 39 Rads warm and Thermostat calling for heat small flame icon on Danfoss